Bag



1.1 is a perspective view of my new design;

1.2 is a front view thereof;

1.3 is a rear view thereof;

1.4 is a side view thereof;

1.5 is a side view thereof, from a side opposite that of FIG. 1.4;

1.6 is a top view thereof; and

1.7 is a bottom view thereof.

The broken lines shown in the drawings illustrate portions of the bag that form no part of the claimed design. 

CLAIM The ornamental design for a bag, as shown and described. 